JP4934533B2 - Carton take-out supply device - Google Patents

Description

  The present invention relates to a carton take-out and supply device that takes out a carton from a carton storage portion that stores a folded carton and supplies the carton to a transport device.

  There is known a carton take-out and supply device that takes out a carton from a carton housing portion that houses a folded carton and supplies the carton to a conveying device (for example, Patent Document 1). For example, the carton take-out and supply device takes out cartons, which are outer boxes of tissue paper, one by one at a high speed of 80 to 100 pieces per minute. Due to the high speed, takeout failure occurred frequently due to differences in carton warpage, ruled line penetration, and printing ink slippage, causing frequent stoppage of the processing line. Conventionally, attempts have been made to improve the size and material of the vacuum cup that adsorbs the carton. However, the stop of the processing line due to the failure of taking out has been the main cause of the stop of the processing line.

Japanese Patent Laid-Open No. 2001-72018

  Stopping the processing line due to the failure to take out the carton deteriorates the operation rate and leads to an increase in manufacturing cost. Thus, there is a demand for a carton take-out and supply device that reduces the failure of carton take-out and suppresses the increase in manufacturing cost.

  An object of the present invention is to provide a carton take-out and supply device that can reduce the occurrence of defective take-out of a carton and improve the operating rate of a processing line.

[1] A carton take-out and supply device for taking out a tissue paper carton having a push-up piece forming perforation formed in the central region of the bottom surface and supplying the carton to a conveying device in a folded state. The carton is housed, and the lower part is a take-out part of the carton, the carton containing part provided with a stopper that engages the carton and holds the carton at the take-out part, and the carton containing part comprising a driving suction portion having an elastically deformable suction cup for sucking said cartons arranged in front of the take-out portion to the tip portion, wherein the driving suction unit, said of said carton in a folded state the suction cup so that the longitudinal direction of the both ends with suction, each two configurations of the bottom to avoid the push-up piece forming perforations formed in the central region , The suction cup than said longitudinal has a long oval shape in the lateral direction perpendicular the bottom surface in the longitudinal direction, the driving suction unit is advanced by attracting the carton of the foreground, A carton take-out and supply device for taking out the carton from the carton housing by retreating.

[2] The carton take-out and supply device according to [1] , wherein the suction cup is formed of an elastic material containing nitrile rubber.

[3] The suction cup is connected to the suction cup holding main body portion in which a suction hole for sucking the inside thereof is formed, and the suction cup that is elastically deformed to suck the carton. The suction cup is provided with a cup portion provided with a suction port on the tip end side, and the suction cup holding main body portion side of the suction cup holding main body portion and the cup portion is larger than the diameter of the suction cup main body side. The carton take-out and supply device according to [1] or [2] , further including an enlarged diameter portion having a large diameter.

[4] The carton take-out and supply device according to [3] , wherein the cup portion includes a protruding rib portion and a groove portion formed in the suction port.

Suction cup driving the suction unit, since the than the longitudinal bottom of the carton has a long shape in the lateral direction perpendicular the bottom surface in the longitudinal direction, sucking the both ends in the longitudinal direction of the bottom surface of the carton, Although the area to be sucked is not so large, the carton can be sucked well and firmly. For this reason, it is not necessary to provide a large number of suction cups, the position of the suction cups can be easily adjusted, and trouble is unlikely to occur. Further, since both end portions of the bottom surface of the carton in the longitudinal direction are sucked, the push-up piece forming perforation formed in the carton is not damaged during suction.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments, and changes, modifications, and improvements can be added without departing from the scope of the invention.

  FIG. 1 shows a processing line in which a plurality of carton take-out and feeding devices 1 of the present invention are arranged side by side on a transport device 5 that transports a carton 7. For example, cartons 7 having different colors are sequentially taken out from each carton take-out and supply device 1, arranged in a predetermined arrangement, and conveyed by the conveying device 5.

  As shown in FIG. 2, the carton take-out and supply device 1 includes a carton housing portion 2 that houses a folded carton 7 and an elastically deformable body that sucks the carton 7 housed in the carton housing portion 2. And a drive suction unit 3 having a suction cup 11 at the tip.

  The carton accommodating portion 2 accommodates the folded cartons 7 in a stacked manner, and the lower portion is a take-out portion 2t of the carton 7. And the stopper 2s which latches the carton 7 to the taking-out part 2t and hold | maintains the carton 7 is provided. For this reason, the stacked carton 7 is accommodated in the carton accommodating portion 2 by the stopper 2s without falling from below. As will be described later, the carton 7 disposed on the foremost surface, that is, the lowermost surface of the take-out portion 2t of the carton housing portion 2 is sucked into the suction cup 11 and taken out one by one from the carton housing portion 2.

  The drive suction unit 3 is disposed below the carton storage unit 2 and is configured to be capable of moving forward in a direction approaching the take-out unit 2t of the carton storage unit 2 and retreating in a direction away from the drive shaft unit. A suction cup 11 for sucking the carton 7 in the carton container 2 and taking out the carton 7 from the carton container 2 is provided at the tip of the part 4. In the embodiment shown in FIG. 2, the drive suction unit 3 repeatedly rises and falls, and the carton 7 is taken out.

  FIG. 3 shows a cross-sectional view of the suction cup 11. As shown in FIG. 3, the suction cup 11 is connected to a suction cup holding main body portion 12 in which a suction hole 14 for sucking the inside thereof is formed, and an outer peripheral portion of the suction cup holding main body portion 12, and sucks the carton 7. And a suction cup 13 that is elastically deformed. The suction cup 13 has a cup portion 15 provided with a suction port 15k on the distal end portion side, and the suction cup holding main body portion 12 side has a diameter larger than the diameter of the suction cup holding main body portion 12 and the cup portion 15 on the suction cup main body portion 12 side. And an enlarged diameter portion 16. In other words, the enlarged diameter portion 16 of the suction cup 13 is a bellows portion having a cross section formed in a mountain shape between the suction cup holding main body portion 12 and the cup portion 15. Since the suction cup 13 that is elastically deformed has a two-layer structure of the cup part 15 and the enlarged diameter part 16, the air inside the suction cup 13 is sucked more and the sucked object (carton 7) is reliably sucked. Is possible. That is, since it has the bellows part (diameter-enlarged part 16), it is possible to follow the carton 7 having a strong warp and attract it by the flexibility of the bellows part. The suction cup 11 is preferably made of an elastic material containing nitrile rubber. By making the suction cup 11 a nitrile rubber system that does not change in softness due to temperature changes, it is possible to prevent troubles due to cup curing during cold weather.

FIG. 4A shows a bottom view of the suction cup 11 viewed from the suction port 15k side, and FIG. 4B shows a side view. Suction cup 11 has a longitudinal bottom face of the carton 7, elongated shape having different lengths in the widthwise direction of the bottom surface perpendicular carton 7 in its longitudinal direction, it has an oval shape, and specifically, FIG. As shown in FIG. 4 (a), the suction port 15k has an oval shape. For this reason, as will be described later, it is possible to suck a wide range while avoiding a region where suction is difficult. For this reason, the perforation for forming the push-up piece formed in the central region of the bottom surface of the carton 7 can be avoided and sucked, and the trouble of damaging the perforation for forming the push-up piece can be suppressed.

  On the other hand, for example, when the suction port is circular, if a large suction cup 11 is used to obtain a sufficient suction force, it is difficult to avoid a region that is difficult to suck and a region that is difficult to suck. If a small suction cup 11 is used to avoid the problem, it becomes difficult to obtain a sufficient suction force. Further, when many small suction cups 11 are used, it is difficult to balance each of them, and adjustment takes time.

By using the suction cup 11 having an oval shape as in the present invention, a sufficient suction force can be obtained and the number of suction cups 11 can be reduced without providing a large number of suction cups 11. Adjustment of suction becomes easy.

  Furthermore, the cup part 15 is formed with a protruding rib part 15r and a groove part 15m at the suction port 15k. A protruding rib 12r and a groove 12m are also formed on the suction port 15k side of the suction cup holding main body 12. As described above, since the rib portions 15r and 12r and the groove portions 15m and 12m are formed by the elastic member on the suction port 15k side and are uneven, it is possible to reliably suck the suction target (carton 7). It is.

  Next, the carton 7 accommodated in and taken out from the carton take-out and supply device 1 will be described. The carton 7 is a storage box mainly made of paper materials such as cardboard made of wood pulp and waste paper, and is a substantially rectangular parallelepiped storage box for storing sanitary paper such as tissue paper and paper towels. . A cut line (perforation, etc.) for forming a sanitary paper take-out port is formed on one surface of the carton 7, and the take-out port is formed when the user breaks the cut line. The sanitary paper inside the carton 7 can be taken out. Further, in the case of a box, on the surface (bottom surface) opposite to the surface on which the outlet is formed, a U-shaped push-up piece forming cut line 24 is formed in the central region at a pair of perforations. (See FIG. 6). When this push-up piece forming cut line 24 is pressed and broken, and bent inside the carton body, a pair of push-up pieces are formed. Since the sanitary paper inside the carton body is pushed upward by the push-up piece, it is possible to stably pop up from the upper surface outlet to the last sheet of sanitary paper.

  In the carton take-out and supply device 1 of the present invention, the cartons 7 as described above are stacked and accommodated in a folded state, and taken out from the take-out portion 2t and supplied to the conveying device 5 as described below. The

  Next, the carton take-out and supply process in the processing line will be described. As shown in FIG. 1, a plurality (5 in FIG. 1) of carton take-out and supply devices 1 of the present invention are arranged side by side on a transfer device 5 that carries a carton 7. As shown in FIG. 2, the folded cartons 7 are stacked and accommodated. Each carton take-out and supply device 1 accommodates a carton 7 decorated with different colors. Then, as shown in FIG. 2, the drive suction unit 3 moves forward in a direction approaching the take-out unit 2 t of the carton storage unit 2 and sucks the frontmost carton 7 with the suction cup 11.

FIG. 5 shows a state where the frontmost carton 7 is sucked by the suction cup 11. The drive suction unit 3 moves forward (ascends) to the vicinity of the carton 7 on the foremost surface (lowermost surface), and presses the suction cup 11 against the carton 7. In FIG. 6, the pressing position of the suction cup 11 with respect to the carton 7 seen from the bottom is shown. The carton 7 is formed with a perforation for forming a push-up piece (cut-up line for forming a push-up piece 24) in the central region, and the cut-out line 24 for forming a push-up piece is downward, that is, a cut line for forming a push-up piece. The surface with 24 is accommodated in the carton accommodating portion 2 as a suction surface, and the drive suction portion 3 is provided with two suction cups 11 so as to suck both ends in the longitudinal direction of the bottom surface of the folded carton 7. Is arranged. That is, in the present embodiment, the longitudinal direction is the first direction. The suction cups 11, than the longitudinal bottom of the carton 7, long in the longitudinal direction in a direction perpendicular (lateral direction of the bottom surface of the carton 7), are arranged so as to have an oval shape. For this reason, the suction cup 11 is not in direct contact with the push-up piece forming perforation formed in the central region of the bottom surface of the carton 7 and has an oval shape. Is possible.

  FIG. 7 shows a further preferred embodiment of the drive suction unit 3. In FIG. 7, the drive suction unit 3 includes a second drive shaft 34 at the tip of the drive shaft 4, and the suction cup 11 is attached to the second drive shaft 34. The drive shaft 4 is formed with a guide portion 4g as a groove, for example, and the second drive shaft 34 is movable along the guide portion 4g. Similarly, the second drive shaft 34 is formed with a guide portion 34g as a groove, for example, and the suction cup 11 is movable along the guide portion 34g. If comprised as mentioned above, the attachment position of the suction cup 11 can be adjusted by these moving mechanisms, and it can respond to the carton of various shapes and sizes.

Returning to FIG. 6, when the suction cup 11 is pressed against the carton 7, the air in the suction cup 13 is sucked from the suction hole 14, whereby the suction cup 13 can suck the carton 7. That is, the carton 7 has a push-up piece forming perforation formed in the central region of the suction surface sucked by the suction cup 11, and the suction cup 11 avoids the push-up piece forming perforation in the central region. Aspirate. Then, as shown in FIG. 2, when the drive suction portion 3 is retracted (lowered), the foremost carton 7 is detached from the stopper 2 s of the carton housing portion 2, and the carton 7 is 1 from the carton housing portion 2. A sheet is taken out. The two suction cups 11 are connected by a connection arm 50 so that the suction position and timing are not shifted.

  The carton 7 is detached from the suction cup 11 by stopping the suction of the air in the suction cup 13 from the suction hole 14. Then, as shown in FIG. 1, cartons 7 of different colors are taken out from the carton take-out and supply devices 1 of 1 to 5 onto the transport device 5, and five cartons 7 (5 colors) are transported as a set. In the subsequent process, the folded carton 7 is assembled into a box shape, and for example, tissue paper is accommodated in the box, and the carton containing tissue paper as shown in FIG. Is done.

  The carton 7 is bent into a shape having an upper surface, a bottom surface, a pair of side surfaces, and a pair of wife surfaces, and is partitioned by these surfaces to form a box shape in which an internal space that can store tissue paper is formed. . The carton 7 is formed with an outlet forming cut line 54 for forming an outlet for tissue paper. The carton 7 may be provided with a window film 59, or may be a so-called filmless carton without a window film. The window film 59 is a film material arranged so as to cover the outlet from the inner surface side of the carton body, and is formed with a slit 58 for taking out sanitary paper.

The carton supplied to the conveying device 5 by the carton take-out and supply device 1 of the present invention is a rectangular parallelepiped carton 7 (FIG. 8) .

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited to these Examples.

(Comparative example)
First, prior to the example, a circular suction cup 41 was used. In FIG. 9 (a), a bottom view of the suction cup 41, shows a side view in Figure 9 (b). The suction cup 43 of the suction cup 41 used at this time has a cup portion 45 provided with a suction port 15k on the distal end side, and a suction cup holding main body portion 42 and a suction cup main body portion 14 of the cup portion 45 on the suction cup holding main body portion 42 side. And an enlarged diameter portion 46 having a larger diameter than the diameter on the side. The suction cup 43 is circular and made of silicon.

A suction cup 41 having a circular suction cup 43 as shown in FIG. 9 was attached to the carton take-out and supply device shown in FIG. In order to perform sufficient suction, it was necessary to attach five suction cups 41 having a diameter of 40 mm. FIG. 10 shows the mounting position. Cartons 7 were taken out one by one at a high speed of about 80 to 100 per minute by the carton take-out and supply device.

At this time, the following problems occurred. That is, the hardness of the suction cup 41 changed depending on the ambient temperature, and when it was cold, curing occurred and frequent take-out defects occurred. Since five suction cups 41 are attached, it is difficult to adjust the balance of each of them, and time is required for the adjustment. Furthermore, the suction cup 41 arranged in the center causes a problem that the perforation for forming the push-up piece of the carton 7 is broken.

(Example)
The suction cup 11 having the elliptical suction cup 13 shown in FIGS. 3 to 4 was used and arranged as shown in FIG. By using the nitrile rubber-based suction cup 11 that does not change in softness due to temperature changes, there was little occurrence of defective pick-up even in cold weather. A sufficient suction force can be obtained only by attaching two suction cups 11, and each balance adjustment is easy. Further, since there is no suction cup 11 arranged in the central area of the bottom surface of the carton 7, there is no problem that the perforation for forming the push-up piece of the carton 7 is broken. In contrast to the comparative example, in the example, the frequency of failure to remove the carton 7 was reduced by 80%.

The carton take-out and supply device 1 of the present invention can be used, for example, for taking out and supplying cartons for tissue paper. The bottom surface of the tissue paper carton, Figure 6 shows as push-up piece forming score lines 24 (push-up piece forming perforation) is formed, conventionally, is well sucked by the push-up member for forming a perforation There is a problem that it does not go or breaks. Further, in the case of a carton having a rectangular bottom surface, there is also a problem that adjustment for improving the balance of a large number of suction cups (see FIG. 10 ) is difficult. These problems have been solved.

  For example, tissue paper can be accommodated in the folded carton and used as a carton take-out and supply device provided in a processing line for producing a carton containing tissue paper.

It is a processing line provided with a plurality of carton take-out and supply devices according to the present invention. It is a schematic diagram which shows the carton extraction supply apparatus of this invention. It is sectional drawing which shows the suction cup with which the carton extraction supply apparatus of this invention was equipped. It is a schematic diagram which shows the suction cup with which the carton extraction supply apparatus of this invention was equipped, (a) is the schematic diagram seen from the bottom face, (b) is the schematic diagram seen from the side surface. It is a schematic diagram explaining the suction by a suction cup. It is the schematic diagram which looked at suction by a suction cup from the lower part. It is a schematic diagram which shows a drive suction part provided with a 2nd drive shaft. It is a perspective view which shows the carton containing the tissue paper manufactured in the processing line provided with the carton taking out and supplying apparatus of the present invention. The suction cup of the comparative example with which the carton extraction supply apparatus of this invention was equipped is shown. It is a schematic diagram, (a) is a schematic diagram seen from the side, (b) is a schematic diagram seen from the bottom. It is a schematic diagram which shows the attachment position of the suction cup of a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Carton extraction supply apparatus, 2: Carton accommodating part, 2s: Stopper, 2t: Extraction part, 3: Drive suction part, 4: Drive shaft, 5: Conveyance apparatus, 7: Carton, 11: Suction cup, 12: Suction cup Holding body part, 12m: groove part, 12r: rib part, 13: suction cup, 14: suction hole, 15: cup part, 15k: suction port, 15m: groove part, 15r: rib part, 16: enlarged diameter part, 24: push-up Cut line for forming a piece, 41: suction cup, 42: suction cup holding main body, 43: suction cup, 44: suction hole, 45: cup part, 45k: suction port, 46: enlarged diameter part, 50: connecting arm, 54 : Cut line for forming an outlet, 58: Slit, 59: Window film .

Claims (4)

A carton for tissue paper in which a perforation for forming a push-up piece is formed in the central region of the bottom surface, a carton take-out supply device that takes out in a folded state and supplies it to a transport device,
Housing the carton folded state, the lower is the extraction portion of the carton, and the carton containing portion stopper to hold the carton is provided in engagement with the carton to the extraction unit,
A driving suction part having a suction cup that is elastically deformable for sucking the carton disposed at the forefront of the take-out part of the carton housing part,
The driving suction unit, two said suction cup to draw the folded state of the carton of the central region to avoid the formed pushing piece formed perforation of the bottom longitudinal end side of each Arranged, the suction cup has an oval shape that is longer in the short direction of the bottom surface perpendicular to the longitudinal direction than in the longitudinal direction ;
A carton take-out and supply device for taking out the carton from the carton housing part by the drive suction part moving forward, sucking the carton on the foremost side, and moving backward. The carton take-out and feeding device according to claim 1 , wherein the suction cup is formed of an elastic material containing nitrile rubber. The suction cup has a suction cup holding body part in which a suction hole for sucking the inside is formed;
A suction cup connected to the outer periphery of the suction cup holding main body and elastically deforming to suck the carton;
The suction cup has a cup portion provided with a suction port on the tip side, and an enlarged diameter larger than the diameter of the suction cup holding main body portion and the cup portion on the suction cup main body side on the suction cup holding main body side. The carton take-out and supply device according to claim 1 or 2 , further comprising a section. The carton take-out and supply device according to claim 3 , wherein the cup part has a protruding rib part and a groove part formed in the suction port.

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